In conclusion, the quantum AFM Heisenberg spins are now well understood
theoretically. The data from neutron scattering experiments for both
, 
and S=1, 
compare quite well.
For 
, this leads to a direct determination 
.
Quantum spins are well suited for the hypercube computer. Its spatial decomposition is straightforward; the short-range nature (excluding the occasional long-range one) of interaction makes the extension to large numbers of processors simple. Hypercube connections made the use of the node computer efficient and flexible. High speedup can be achieved with reasonable ease, provided one improves the algorithm to minimize the communications.
The work described here is the result of the collaboration between H. Q. Ding and M. S. Makivic.